19713634454 has 8 divisors (see below), whose sum is σ = 29786294808. Its totient is φ = 9784869520.

The previous prime is 19713634453. The next prime is 19713634463. The reversal of 19713634454 is 45443631791.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 19713634399 and 19713634408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19713634453) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35973512 + ... + 35974059.

It is an arithmetic number, because the mean of its divisors is an integer number (3723286851).

Almost surely, 2^19713634454 is an apocalyptic number.

19713634454 is a deficient number, since it is larger than the sum of its proper divisors (10072660354).

19713634454 is a wasteful number, since it uses less digits than its factorization.

19713634454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71947710.

The product of its digits is 1088640, while the sum is 47.

The spelling of 19713634454 in words is "nineteen billion, seven hundred thirteen million, six hundred thirty-four thousand, four hundred fifty-four".